Magnetic separator.



1 B. E. W001]. MAGNETIC SBPARATOR. APPLIOATION FILED D1 0. 27, 1909.

Patented Sept. 27, 1910'.

BERTRAM E. WOOD, OF COLORADO SPRINGS, COLORADO.

MAGNETIC SEPARATOR.

Specification of Letters Patent.

Patented Sept. 27. into.

Application filed December 27, 1909. Serial No. 535,104.

To all whom it may concern:

Be it known that I, BERTRAM E. Wooo, citizen of the UnitedStates, residing at Colorado Springs, in thecounty of El Paso and State of Colorado, have invented new and useful Improvements in Magnetic Separators, of which the following is a specification.

My invention pertains to magnetic separators; and it contemplates the provision of a simple and efficient magnetic separator designed more especially for removing black or magnetic sand from gravel or other sand in dry placering, with a'view of preventing the black sand, which is of approximately the same weight as the gold, from gathering in and clogging up the riflles and interfering with the collection of values.

The novelty, utility and practical advan tages of the invention will be fully understood from the following description and claim when the same are read in connection with the drawings, accompanying and forming part of this specification, in which:

Figure 1 is a side elevation of a magnetic separator constructed in accordance .with my invention. Fig. 2 is a view taken at a I right angle to Fig. 1 and in a line in front of the endless non-magnetic apron. Fig. 3 is a transverse section taken in the plane indicated by the line 3-3 of Fig. 2, and showing the preferred construction of magnet employed.

Similar letters designate corresponding parts in all of the views of the drawings, referring do which:

A A .re uprights comprised in. a suitably supporid frame work, and B, C and D are cross-bars extending between and. fixed to the uprights; the said uprights and cross bars being preferably of wood.

In suitable bearings on the uprights A. are journaled lower and upper transverse shafts E and F, equipped with rolls G, and around the said rolls G is passed. a nonmagnetic endless apron H, of a material suitable to the purpose of said apron. It will also be noticed that I show the upper shaft as having fixed thereon a band pulley I for receiving a belt from a suitable motor (not shown), and through the medium of which rotary motion may be transmitted to the shaft. F and the roll G that is fixed thereon in order to drive the apron H in the direction indicated by arrow.

Arranged between the front stretch of the apron H and the frame work, and resting on the lower and upper cross-bars B and D, and against the intermediate cross-bar O and suitably fixed with respect to theframe work, is the magnet J This magnet is 'preferably of the type and construction illustrated-that is to say, it comprises the body a, wound with coils 5, designed to be connected with a source of electric energy (not shown). The lower portion of the body a is straight and vertically disposed, and the upper portion thereof is curved rearwardly and toward. the inclined frame work as illustrated. It will also be understood by comparisonof Figs. 1, 2 and 3 that the body a is recessed, as indicated by 0, toreceive the coils b, which extend practically throughout the length of said body, and

that the upper curved portion of the body has its face recessed to receive anti-friction rollers or wheels (1. These wheels or rollers d in combination with wheels or rollers c disposed at opposite sides of the magnet body a are designed to support the apron H in its passage over the upper curved portion of the magnet body and in that way prevent undue wear of the apron and at the same time adapt the apron to be driven with the expenditure of little power.

Located at about the distance illustrated from the front stretch of the apron H is a wall K designed to serve in combination with said stretch to form a vertically disposed conduit, and above the said conduit is disposed and suitably supported a hopper L or other suitable means for feeding commingled sand and gravel to the said conduit.

It will also be understood by reference to Fig. 1, that I provide a conduit M for receiving black or magnetic sand from the apron as the same passes over the upper roll Gr, and that I further provide a guide P for receiv'ng the gravel and values from the lower end of the conduit formed between the wall K and the front stretch of the apron H.

In the practical use of my novel separator the apron H is driven in the direction indieated by arrow, and the sand and gravel is fed in a continuous stream through the vertical conduit in front of the apron, whereupon the magnet will operate to cause the sand will be discharged the usage to which magnetic separators are ordinarily subjected.

While I have shown and form of my invention, it is to that I am not limited to the form or relative arrangement closed, but that modifications therein without thereof.

, Having claim and cut, is: y

In a magnetic separator, the combination of a suitably supported inclined frame having lower and upper cross-bars, an electromagnet having a body made up of a lower upright portion that bears on the lower crossdescribed one be understood of parts dismay be made departing from the spirit described my invention, what I desire to secure by Letters-Patdetails or the bar and an upper rearwarcuy-curved p01? tion that rests at its end on the upper cross bar; said electro-magnet also having recesses in the faces of its upright and rearWa-rdly curved portions and further having coils in said recesses and anti-friction wheels in the face of the upper rearwardly curved portion andv also 1n the curved portions of the coils, a suitably supported roll disposed in rear of the upper rearwardly curved portion 3.5 of the magnet body, a suitably supported roll disposed below the lower end of the magnet body, anendless non-magnetic apron arranged on the rolls and in front and rear of the e1eetro-magnet, and an upright Wall spaced from the front stretch of the apron and forming with the same an upright c0n duit.

In testimony whereof I have hereunto set my hand in preseneeof two subscribing Wit- 45 nesses.

BER-TEAM E. l/VOOD.

' Witnesses:

ERNEST F. BENNETT, CHARLES E. Snore. 

